4 layers99.9 × 100 mm
Hermeslite
softerhardware/Hermes-Lite2
A second generation low-cost amateur HF software defined radio transceiver.
490 parts384
2 layers106 × 55 mm
A second generation low-cost amateur HF software defined radio transceiver.
- Size
- 106 × 55 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 48
- Nets
- 29
- Pads
- 155
- Tracks, vias
- 278, 19
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 24 Nov 2016
- Updated
- 4 Nov 2026
Overview
Endcap is an open-source printed circuit board by softerhardware, from the softerhardware/Hermes-Lite2 repository on GitHub. It is a 2-layer board of 106 × 55 mm with 48 parts on 29 nets, routed with 278 tracks and 19 vias.
It is built around the ACPL-M21L-000E, DTC144EE and IRLML6402. Its parts include 18 resistors, 7 transistors, 5 capacitors, 3 connectors and 2 diodes. It belongs with the radio and wireless boards of this library.
Main components
3README
README.mdHermes-Lite 2.x
See the main Hermes-Lite Web Page for the latest links and details.
This is a work in progress to create a low-cost software defined amateur radio HF transceiver based on a broadband modem chip and the Hermes SDR project.
Parts
48| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | 10K | endcaplib:SMD-0805 | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R14, R15, R16, R17 |
| 5 | 0.1uF | endcaplib:SMD-0805 | C1, C2, C3, C4, C5 |
| 5 | MULTIFET | endcaplib:3sot3_3 | Q3, Q4, Q5, Q6, Q7 |
| 4 | 3mm | endcaplib:mh3mm | MH1, MH2, MH3, MH4 |
| 2 | 1K | endcaplib:SMD-0805 | R12, R18 |
| 2 | 1N4148 | endcaplib:SMD-0805 | D1, D2 |
| 2 | Male Header | endcaplib:male_header | J2, J3 |
| 1 | 680 | endcaplib:SMD-0805 | R13 |
| 1 | ACPL-M21L-000E | Package_SO:SO-5_4.4x3.6mm_P1.27mm | U1 |
| 1 | DB9 | endcaplib:db9inside | ACC2 |
| 1 | DTC144E | endcaplib:SOT23_3 | Q1 |
| 1 | Fan | endcaplib:male_header_2 | J4 |
| 1 | Ferrite_Bead_Small | endcaplib:SMD-0805 | FB1 |
| 1 | IRLML6402 | endcaplib:SOT23_3 | Q2 |
| 1 | OSHW-logo_silkscreen-back_2mm | HERMESLITE:OSHW-logo_silkscreen-back_2mm | G*** |
| 1 | SMA | endcaplib:sma_panel | RF3 |
| 1 | Terminal Block | endcaplib:terminal_block | ACC1 |
| 1 | Terminal Block | endcaplib:terminal_block5 | ISO1 |
The 46 most common of 48 parts.
Questions
How big is the Endcap PCB?
It measures 106 × 55 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Endcap use?
48 parts, built around the ACPL-M21L-000E, DTC144EE and IRLML6402. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Endcap KiCad files?
From the softerhardware/Hermes-Lite2 repository on GitHub, at the commit this page was made from: the board is hardware/enclosure/endcaps/kd9s/hl2_55b/hl2_55b_v/endcap.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Endcap design in my own project?
Its repository states no licence, so its author keeps all rights: ask softerhardware before reusing the design.
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